Personnel tests are designed to test a job​ applicant's cognitive​ and/or physical abilities. A particular dexterity test is administered nationwide by a private testing service. It is known that for all tests administered last​ year, the distribution of scores was approximately normal with mean 77 and standard deviation 7.5 . a. A particular employer requires job candidates to score at least 82 on the dexterity test. Approximately what percentage of the test scores during the past year exceeded 82 ​?